Vaporization core, electronic vaporization assembly, and electronic vaporization device

ABSTRACT

A vaporization core for heating and vaporizing an aerosol-generation substrate includes: a first substrate having a first surface and a second surface opposite the first surface, the first surface being provided with a first microgroove array, the first microgroove array including a plurality of first microgrooves, the plurality of first microgrooves guiding a flowing of an aerosol-generation substrate, the first substrate including a dense material; and a first heating element arranged on the second surface for heating the first substrate to vaporize the aerosol-generation substrate in the plurality of first microgrooves.

CROSS-REFERENCE TO PRIOR APPLICATION

This application is a continuation of International Patent Application No. PCT/CN2021/110627, filed on Aug. 4, 2021, which claims priority to Chinese Patent Application No. 202010795986.1, filed on Aug. 10, 2020. The entire disclosure of both applications is hereby incorporated by reference herein.

FIELD

The present invention relates to the technical field of vaporizing tools, and in particular, to a vaporization core, an electronic vaporization assembly, and an electronic vaporization device.

BACKGROUND

As a cigarette substitute, an electronic vaporization device is generally used for smoking cessation. Vapor produced by the electronic vaporization device includes appearance and taste similar to that of a cigarette, but generally does not include other harmful ingredients such as tar and suspended particulates in the cigarette.

The electronic vaporization device mainly includes an electronic vaporization assembly and a power supply assembly. The electronic vaporization assembly includes a vaporization core, which is a core device of the electronic vaporization device to generate vapor, and its vaporization effect determines the quality and taste of the vapor. The early electronic vaporization devices mostly use the structure of a metal heating wire wrapped around a fiber rope as a vaporizer, which is collectively referred to as a cotton core vaporizer. The vaporizer of this structure requires e-liquid to completely wet a heat source, but the e-liquid will inevitably decrease as a use time increases. Dry burning, carbon deposition, and a burnt flavor gradually appear during use. In addition, the structure of the vaporization core determines a non-uniform heating temperature thereof. A temperature in an area next to the metal heating wire is very high. The e-liquid here will undergo a cracking chemical reaction due to the high temperature, producing aldehydes and ketones gases that are harmful to a human body.

For the disadvantages of the vaporizer made of a metal heating wire wrapped around a fiber rope, a ceramic vaporizer product appears. The vaporizer is made of a porous ceramic and a metal heating film: The ceramic is sintered and shaped at a high temperature, and many tiny micropores are formed inside, with an average pore size equivalent to one-fifth of the hair, which is similar to a honeycomb structure. A ceramic vaporization component is formed by combining a metal heating film with a ceramic substrate dotted with micropores. Using surface tension and capillary action, the e-liquid can penetrate uniformly into the vaporizer and be transmitted to the vaporizer surface. During operation, the heating film generates heat after energized, to instantly heat the liquid stored in the porous ceramic substrate to form an aerosol.

The structure of the ceramic vaporization core determines that the e-liquid can only be transmitted from an e-liquid tank to the metal heating film through the winding flow channel in the ceramic substrate. However, the flow channel structure in the porous ceramic obtained by high temperature sintering is difficult to accurately control. If the pore throat diameter is too small, it will prevent the e-liquid from passing through, and if the diameter is too large, the e-liquid may leak from the vaporizer. In addition, the structure of a porous ceramic is similar to that of molecular sieves, which can adsorb and filter the e-liquid containing various components such as flavors and fragrances, which affects the mass transfer process of the e-liquid. During a vaporization process, the reduction degree of the fragrances of the e-liquid is poor, and the nicotine transmission efficiency is low, which ultimately reduces the use experience of the device. Finally, the structural stability of the porous ceramic is poor, the structural strength is lower than that of a dense substrate, and the reliability in a thermal cycling environment required by the vaporizer is low.

In addition, no matter the vaporizer is a cotton core vaporizer or a ceramic vaporizer, the metal wire or metal film serving as the heat source may be in direct contact with the e-liquid. The chemical stability of metal materials is poor, and there is a potential safety hazard in the long-term contact of the e-liquid with metal, especially in high-temperature heating.

SUMMARY

In an embodiment, the present invention provides a vaporization core for heating and vaporizing an aerosol-generation substrate, comprising: a first substrate comprising a first surface and a second surface opposite the first surface, the first surface being provided with a first microgroove array, the first microgroove array comprising a plurality of first microgrooves, the plurality of first microgrooves being configured to guide a flowing of an aerosol-generation substrate, the first substrate comprising a dense material; and a first heating element arranged on the second surface and configured to heat the first substrate to vaporize the aerosol-generation substrate in the plurality of first microgrooves.

BRIEF DESCRIPTION OF THE DRAWINGS

Subject matter of the present disclosure will be described in even greater detail below based on the exemplary figures. All features described and/or illustrated herein can be used alone or combined in different combinations. The features and advantages of various embodiments will become apparent by reading the following detailed description with reference to the attached drawings, which illustrate the following:

FIG. 1 is a schematic structural front view of a vaporization core according to the present invention;

FIG. 2 is a schematic structural diagram of Embodiment 1 of a vaporization core according to the present invention;

FIG. 3 is a rear view of FIG. 1 ;

FIG. 4 is a schematic diagram of a first capillary channel whose two ends are not flush with a first substrate;

FIG. 5 is a schematic structural diagram of another embodiment of a first heating element;

FIG. 6 is a schematic structural diagram of a first capillary channel;

FIG. 7 is a schematic structural diagram of Embodiment 2 of a vaporization core according to the present invention;

FIG. 8 is a schematic structural diagram of Embodiment 3 of a vaporization core according to the present invention;

FIG. 9 is a schematic structural diagram of Embodiment 4 of a vaporization core according to the present invention;

FIG. 10 is a schematic structural diagram of Embodiment 5 of a vaporization core according to the present invention;

FIG. 11 is a schematic structural diagram of another embodiment of a first capillary channel;

FIG. 12 is a schematic diagram of a first side surface of another first substrate;

FIG. 13 is a schematic diagram of a second side surface of another first substrate;

FIG. 14 is a side view of a vaporization core;

FIG. 15 is a schematic structural front view of Embodiment 1 of an electronic vaporization assembly according to the present invention;

FIG. 16 is a schematic structural diagram of another embodiment of an electronic vaporization assembly according to the present invention; and

FIG. 17 is a schematic structural diagram of an electronic vaporization device according to the present invention.

DETAILED DESCRIPTION

In an embodiment, the present invention provides a vaporization core, an electronic vaporization assembly, and an electronic vaporization device, to solve the problems that the current cotton core vaporizer and ceramic vaporizer are heated non-uniformly, leading to generation of harmful gases by the e-liquid, and the e-liquid flow channel on the ceramic substrate is difficult to control, leading to a poor reliability.

In an embodiment, the present invention provides a vaporization core, configured to heat and vaporize an aerosol-generation substrate, including:

a first substrate, including a first surface and a second surface opposite to the first surface, where the first surface is provided with a first microgroove array, the first microgroove array includes a plurality of first microgrooves, the first microgrooves are configured to guide flowing of an aerosol-generation substrate, and the first substrate is made of a dense material; and

a first heating element, arranged on the second surface and configured to heat the first substrate to vaporize the aerosol-generation substrate in the plurality of first microgrooves.

The width of the first microgroove is less than 0.3 mm, and the depth of the microgroove is less than 0.3 mm. A cross section of the first microgroove is V-shaped.

The first microgroove is a blind groove.

The first heating element generates a temperature field when heating the first substrate, and first microgrooves with different densities are provided corresponding to different temperature areas.

The vaporization core further includes:

a second substrate, including a third surface and a fourth surface opposite to the third surface, where the third surface is provided with a second microgroove array, and the second microgroove array includes a plurality of second microgrooves; and

the first substrate and the second substrate are stacked, and the second surface is attached to the fourth surface, for the first heating element to be arranged between the first substrate and the second substrate.

The vaporization core further includes:

a second substrate, including a third surface and a fourth surface opposite to the third surface, where the third surface is provided with a second microgroove array, and the second microgroove array includes a plurality of second microgrooves; and

the first substrate and the second substrate are stacked, and the first surface is attached to the third surface, for the first heating element to be arranged on a side of the first substrate away from the second substrate.

The vaporization core further includes:

a second heating element, attached to the fourth surface and configured to heat the second substrate, where

the first heating element and the second heating element are controlled to operate by different driving mechanisms, and the plurality of first microgrooves and the plurality of second microgrooves are not in communication with each other.

The plurality of first microgrooves are parallel to each other and provided at intervals, the plurality of second microgrooves are parallel to each other and provided at intervals, and the plurality of first microgrooves and the plurality of second microgrooves are in communication with each other in an intersecting manner.

The first surface includes a first area and a second area adjacent to the first area, the plurality of first microgrooves extend from the first area to the second area, the second surface includes a third area corresponding to the first area, and the first heating element is arranged and covered only on the third area.

To resolve the technical problems, the present invention further provides an electronic vaporization assembly, and the electronic vaporization assembly includes a liquid storage cavity and the vaporization core according to any one of the above, where

the plurality of first microgrooves are parallel to each other and provided at intervals; the liquid storage cavity includes a first liquid storage chamber and a second liquid storage chamber provided at intervals on two ends of the plurality of first microgrooves, and the aerosol-generation substrate in the first liquid storage chamber and the second liquid storage chamber diffuses from the two ends to a middle part of the plurality of first microgrooves; and the first heating element is arranged at a position on the second surface corresponding to the middle part of the plurality of first microgrooves.

The plurality of first microgrooves extend from the center to the periphery; the liquid storage cavity is provided corresponding to the center, and the aerosol-generation substrate in the liquid storage cavity diffuses from the center to the periphery along the plurality of first microgrooves; and the first heating element is arranged on the second surface around the liquid storage cavity.

To resolve the technical problems, the present invention further provides an electronic vaporization device, and the electronic vaporization device includes a power supply assembly and the electronic vaporization assembly according to any one of the above.

Compared with the related art, the beneficial effects achieved by the vaporization core, the electronic vaporization assembly, and the electronic vaporization device of the present invention are as follows: The substrate is made of a dense material, the heating element and the liquid to be vaporized are provided on two different side portions of the vaporization core respectively and are not in contact with each other completely. Therefore, the e-liquid may not be deteriorated due to long-time storage during use, heavy metal elements may not appear in the vaporization process, and the safety is higher.

The following clearly and completely describes the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are merely some but not all of the embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

All directional indications (for example, upper, lower, left, right, front, and rear) in the embodiments of the present invention are merely used for explaining relative position relationships, movement situations, or the like between various components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications change accordingly. In this invention, the terms “first”, “second”, and the like are intended to distinguish between different objects but do not indicate a particular order. In addition, the terms “comprise”, “have”, and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units; and instead, further optionally includes a step or unit that is not listed, or further optionally includes another step or unit that is intrinsic to the process, method, product, or device.

“Embodiment” mentioned in this specification means that particular features, structures, or characteristics described with reference to the embodiment may be included in at least one embodiment of the present invention. The term appearing at different positions of this specification may not refer to the same embodiment or an independent or alternative embodiment that is mutually exclusive with another embodiment. A person skilled in the art explicitly or implicitly understands that the embodiments described in this specification may be combined with other embodiments.

Referring to FIG. 1 to FIG. 3 , FIG. 1 is a schematic structural front view of a vaporization core according to the present invention, FIG. 2 is a schematic structural diagram of Embodiment 1 of a vaporization core according to the present invention, and FIG. 3 is a rear view of FIG. 1 . A vaporization core configured to heat and vaporize an aerosol-generation substrate is provided, including: a first substrate 1, including a first surface 10 and a second surface 20 opposite to the first surface 10, where the first surface 10 is provided with a first microgroove array 11, the first microgroove array 11 includes a plurality of first microgrooves 12, the first microgrooves 12 are configured to guide flowing of an aerosol-generation substrate 100 (refer to FIG. 10 ), and the first substrate 1 is made of a dense material; and a first heating element 2, arranged on the second surface 20, configured to heat the first substrate 1 to vaporize the aerosol-generation substrate 100 in the first microgrooves 12. The first substrate 1 is configured to serve as a substrate of a vaporization component, the first microgroove array 11 is arranged on the first surface 10 of the first substrate 1 to guide flowing of the aerosol-generation substrate 100. In addition, the first heating element 2 is arranged on the second surface 20 opposite to the first surface 10 to cause the first substrate 1 to generate heat during use, and heat energy is quickly transferred to the aerosol-generation substrate 100 in the first microgroove array 11 through the first substrate 1, to vaporize the aerosol-generation substrate 100. The aerosol-generation substrate 100 may be e-liquid, health and medical vaporization agent or chemical agent, or the like. In this application, a specific description is made by using an example in which the aerosol-generation substrate 100 is e-liquid.

In this application, the first microgroove array 11 includes a plurality of first microgrooves 12, and the first microgrooves 12 are capillary channels, which use capillary action to cause the aerosol-generation substrate 100 to diffuse along the first microgrooves 12 in the first microgrooves 12 with a smaller diameter under a combined action of surface tension, cohesion, and adhesion of the aerosol-generation substrate 100. When the first substrate 1 is placed vertically, the aerosol-generation substrate 100 may also diffuse from bottom to top along the first microgrooves 12 and rise to a certain height, so that the aerosol-generation substrate 100 in the first microgrooves 12 may be vaporized.

In order to prevent the aerosol-generation substrate 100 from penetrating to an opposite side through the first substrate 1, the first substrate 1 in this application is made of a dense material. Preferably, the material of the first substrate 1 is a dense insulating material or semiconductor material. Specifically, when the material is an insulating material, the material of the first substrate 1 may be selected from glass, quartz, zirconia, aluminum oxide, silicon carbide, or aluminum nitride. When the material is a semiconductor material, the material of the first substrate 1 may be selected from silicon or gallium arsenide. The materials of the first substrate 1 are all dense materials with high strength, and the aerosol-generation substrate 100 cannot penetrate through the first substrate 1 to the side provided with the first heating element 2, thereby avoiding a safety problem that a substrate made of a porous ceramic material may drop powder during thermal cycling. When the vaporization core of the above material is used to vaporize e-liquid, various solutes such as essence, fragrance, nicotine, and the like in the e-liquid are not adsorbed and filtered, which can restore the fragrance of the e-liquid to the greatest extent and improve the taste and the nicotine transmission efficiency.

In this embodiment, the first heating element 2 is a thin-film sheet-shaped structure, which is attached to the first substrate 1. A metal heating film with a uniform shape is prepared on the thin sheet structure, and heat energy is transmitted through the thin sheet to the aerosol-generation substrate 100 on the other side, so as to achieve a more uniform temperature field. In addition, the plurality of first microgrooves 12 of the vaporization core are uniformly distributed on the first substrate 1, to ensure that each first microgroove 12 is heated uniformly during use. Limited by the structure and material of the heater, a heat source is a linear metal wire or a metal film, which cannot achieve a uniform temperature field. In order to obtain a sufficient amount of vapor, a temperature in a high temperature area is often much higher than the boiling point of the e-liquid. The setting can avoid a cracking chemical reaction of the e-liquid due to non-uniform heating temperature of the vaporizer, and generation of aldehyde and ketone gases that are harmful to a human body.

In an embodiment, the plurality of first microgrooves 12 are provided in parallel at intervals, and extend from one end to an opposite end of the first substrate 1. Certainly, the two ends of the first microgrooves 12 may not be flush with the ends of the first substrate 1, as shown in FIG. 4 . The width of the plurality of first microgrooves 12 is less than 0.3 mm, and the depth is less than 0.3 mm, so that the first microgrooves 12 can realize capillary action.

In this application, the shape of the first heating element 2 is shown in FIG. 3 or FIG. 5 . As shown in FIG. 3 , the first heating element 2 may be concentrated in a middle part of an upper half of the first substrate 1. As shown in FIG. 5 , FIG. 5 is a schematic structural diagram of another embodiment of the first heating element. The first heating element 2 may be concentrated in the middle part of the upper half of the first substrate 1 or cover the entire upper half of the first substrate 1. A difference is that the first heating element 2 in FIG. 3 is formed by multiple bending of a heating wire, and in FIG. 5 , the first heating element is a continuous heating film to realize a uniform temperature field, so that the aerosol-generation substrate 100 can be uniformly heated.

In an embodiment, the cross section of the first microgroove 12 is arc-shaped, V-shaped, or rectangular. A function of the first microgroove 12 is not only to transmit the aerosol-generation substrate 100 to the vaporization end of the first substrate 1, but also to perform storage. When the vaporization core is not operating, part of the aerosol-generation substrate 100 is stored in the first microgroove 12. When the vaporization core is operating, the aerosol-generation substrate 100 stored in the first microgroove 12 is first vaporized, and the size of the first microgroove 12 is positively correlated with the storage amount and the vaporization amount of the aerosol-generation substrate 100.

Referring to FIG. 6 , FIG. 6 is a schematic structural diagram of a first capillary channel. The cross section of the first microgroove 12 is V-shaped, and the first microgroove 12 is a blind groove. The storage amount VO of the aerosol-generation substrate 100 in a single first microgroove 12 is determined by the geometric size of the microgroove and the quantity n of the first microgrooves 12. In this embodiment, a description is made by using an example in which the first microgroove 12 is V-shaped. The length of the first substrate 1 is L, and the length of the first microgroove 12 is l, the depth of the first microgroove 12 is h, and the width of the first microgroove 12 is w. During vaporization, the e-liquid stored in the first microgroove 12 is preferentially vaporized, and at the same time, the aerosol-generation substrate 100 is continuously supplied from a storage tank to the heating end through the first microgroove 12. The flowing of the aerosol-generation substrate 100 in the first microgroove 12 may be calculated according to Washburn equation, where z is the distance that aerosol-generation substrate 100 passes by, γ is the surface tension, μ is the viscosity of the aerosol-generation substrate 100, r is a radius of the capillary channel, θ is a contact angle of the aerosol-generation substrate 100 to the material of the first substrate 1, and t is a time.

The flow rate of a single first microgroove 12 in a unit vaporization time is:

${z(t)} = {\left( \frac{\gamma r\cos\theta}{2\mu} \right)^{1/2}t^{1/2}}$

The total vaporization amount of aerosol-generation substrate 100 is:

V=n·h·w·z(t)

After the aerosol-generation substrate 100 and the material of the first substrate 1 are determined, γ, μ, and θ remain unchanged, and the vaporization amount of the aerosol-generation substrate 100 is only related to the geometric structure of the first microgroove 12 and the vaporization time. By controlling the size of the first microgroove 12, the total vaporization amount may be accurately controlled.

The first substrate 1 is made of a dense material and is formed by photolithography etching, laser etching, nano-imprinting, or plasma etching, and the size and shape of the first microgroove 12 may be accurately controlled, to make the sizes and shapes of the plurality of first microgrooves 12 highly consistent, so as to accurately control the total vaporization amount when the vaporizer operates, which is convenient for large-scale manufacturing and achieving ultra-high consistency and stability of the product performance.

In this embodiment, the first heating element 2 generates a temperature field when heating the first substrate 1, and first microgrooves 12 with different densities are provided corresponding to different temperature areas. It may be understood that, when the density of the first microgroove 12 is set to be high, the temperature in the temperature field is high, and when the density of the first microgroove 12 is set to be small, the temperature in the temperature field is relatively low. The vaporization temperatures of different aerosol-generation substrates are different. For different aerosol-generation substrates and requirements for different vaporization amounts, the density of the first microgroove 12 may be changed to meet different use requirements.

The first substrate 1 of the vaporization core is made of a dense material, and the first heating element 2 and the aerosol-generation substrate 100 are provided on two different side portions of the vaporization core respectively and are not in contact with each other completely. Therefore, the e-liquid may not be deteriorated due to long-time storage during use, heavy metal elements may not appear in the vaporization process, and the safety is higher.

Embodiment 2

Referring to FIG. 7 , FIG. 7 is a schematic structural diagram of Embodiment 2 of a vaporization core according to the present invention. In this embodiment, in addition to the first substrate 1, the vaporization core further includes a second substrate 3, and the second substrate 3 includes a third surface 30 and a fourth surface 40 opposite to the third surface 30, where the third surface 30 is provided with a second microgroove array 31, and the second microgroove array 31 includes a plurality of second microgrooves 32; and the first substrate 1 and the second substrate 3 are stacked, and the second surface 20 is attached to the fourth surface 40, for the first heating element 2 to be arranged between the first substrate 1 and the second substrate 3. In this embodiment, the shapes and settings of the second substrate 3, the second microgroove array 31, and the second microgrooves 32 are the same as those of the first substrate 1, the first microgroove array 11, and the first microgrooves 12 respectively. The first heating element 2 is fixed between the first substrate 1 and the second substrate 3, and the first substrate 1 and the second substrate 3 are both heated through the first heating element 2, so that the vaporization core generates more vapor, and the vaporization efficiency is higher.

In this embodiment, the material of the second substrate 3 is the same as that of the first substrate 1.

In this embodiment, the shape and length of the second microgroove 32 are both the same as those of the first microgroove 12, and the extending direction of the second microgroove 32 is the same as that of the first microgroove 12.

Embodiment 3

Referring to FIG. 8 , FIG. 8 is a schematic structural diagram of Embodiment 3 of a vaporization core according to the present invention. In this embodiment, in addition to the first substrate 1, the vaporization core further includes a second substrate 3, and the second substrate 3 includes a third surface 30 and a fourth surface 40 opposite to the third surface 30, where the third surface 30 is provided with a second microgroove array 31, and the second microgroove array 31 includes a plurality of second microgrooves 32; and the first substrate 1 and the second substrate 3 are stacked, and the first surface 10 is attached to the third surface 30, for the first heating element 2 to be arranged on a side of the first substrate 1 away from the second substrate 3.

A difference between this embodiment and Embodiment 2 is that the first heating element 2 is arranged on the outside of the first substrate 1 and the second substrate 3, so that the first microgroove array 11 and the second microgroove array 31 are arranged in the middle part of the vaporization core, and the first heating element 2 still heats the first microgroove array 11 and second microgroove array 31 simultaneously.

Embodiment 4

As shown in FIG. 9 , FIG. 9 is a schematic structural diagram of Embodiment 4 of a vaporization core according to the present invention. In this embodiment, in addition to the second substrate 3, the vaporization core may further include a second heating element 4, and the second heating element 4 is attached to a fourth surface 40 and configured to heat the second substrate 3.

A difference between this embodiment and Embodiment 3 is that the second heating element 4 is arranged on the second substrate 3, so that the outside of the first substrate 1 and the second substrate 3 are respectively provided with a heating element, and the first heating element 2 and the second heating element 4 heat the first microgroove array 11 and the second microgroove array 31 respectively. The first microgroove array 11 and the second microgroove array 31 are still arranged in the middle part of the vaporization core.

The first heating element 2 and the second heating element 4 may be controlled to operate by the same or different driving mechanisms.

Embodiment 5

As shown in FIG. 10 , FIG. 10 is a schematic structural diagram of Embodiment 5 of a vaporization core according to the present invention. A difference between this embodiment and Embodiment 4 is that: the first heating element 2 and the second heating element 4 are controlled to operate by different driving mechanisms, and the plurality of first microgrooves 12 and the plurality of second microgrooves 32 are not in communication with each other. Specifically, the plurality of first microgrooves 12 are parallel to each other and provided at intervals, the plurality of second microgrooves 32 are also parallel to each other and provided at intervals, and the plurality of first microgrooves 12 and the plurality of second microgrooves 32 are parallel to each other and provided in a staggered manner, so that the plurality of first microgrooves 12 and the plurality of second microgrooves 32 are not in communication with each other. In a specific use process, the first heating element 2 or the second heating element 4 may be controlled to operate respectively or simultaneously according to requirements for vaporization amount of different vaporizer products. In addition, the user may adjust the vaporization amount according to a use requirement.

In this application, the shape of the first microgroove 12 may also have various forms, one of which is shown in FIG. 1 . In order to set a plurality of parallel first microgrooves 12, the plurality of first microgrooves 12 are provided on the first substrate 1 in parallel and at intervals, and the directions of the plurality of liquid flowing channels are consistent. Another form is shown in FIG. 8 . FIG. 11 is a schematic structural diagram of another embodiment of a first capillary channel. A plurality of first microgrooves 12 and a plurality of second microgrooves 32 are provided, the plurality of first microgrooves 12 are parallel to each other and provided at intervals, the plurality of second microgrooves 32 are parallel to each other and provided at intervals, the plurality of first microgrooves 12 and the plurality of second microgrooves 32 are perpendicular to each other and are in communication with each other in an intersecting manner, a plurality of liquid flowing channels are respectively formed between the plurality of first microgrooves 12 and the plurality of second microgrooves 32, and the liquid flowing channels are in a communicated state.

Referring to FIG. 12 and FIG. 13 , FIG. 12 is a schematic diagram of a first side surface of another first substrate, and FIG. 13 is a schematic diagram of a second side surface of another first substrate. The first substrate 1 is provided with a hole-shaped structure communicated in a middle part, where a structure of one side is a vertical groove, and a structure of the other side is a horizontal groove. The aerosol-generation substrate 100 may flow between the vertical groove and the horizontal groove through the hole-shaped structure. The first substrate 1 is heated by a thin sheet-shaped first heating element 2.

Referring to FIG. 14 , FIG. 14 is a side view of a vaporization core. In this application, the first surface 10 includes a first area 50 and a second area 60 adjacent to the first area 50, a plurality of first microgrooves 12 extend from the first area 50 to the second area 60, the second surface 20 includes a third area 70 corresponding to the first area 50, and the first heating element 2 is arranged and covered only on the third area 70.

In order to avoid direct contact between the first heating element 2 and the aerosol-generation substrate 100, the first substrate 1 in this application is only partially soaked in the aerosol-generation substrate 100, that is, the second area is soaked in the aerosol-generation substrate 100, and the first area and the third area are not in direct contact with the aerosol-generation substrate 100 in the liquid storage chamber. The aerosol-generation substrate 100 rises from the second area to the first area by capillary action, and the third area corresponding to the first area conducts the heat generated by the first heating element 2, to vaporize the aerosol-generation substrate 100. Meanwhile, the first heating element 2 covers part or all of the third area that is not soaked in the aerosol-generation substrate 100.

To resolve the technical problems, this application further provides an electronic vaporization assembly. Referring to FIG. 15 , FIG. 15 is a schematic structural front view of Embodiment 1 of an electronic vaporization assembly according to the present invention. The electronic vaporization assembly includes a liquid storage cavity 5 and the vaporization core, where the liquid storage cavity 5 is configured to store an aerosol-generation substrate 100. During use, the vaporization core is partially soaked in the aerosol-generation substrate 100 in the liquid storage cavity 5. Specifically, the second area of the first surface 10 is soaked in the aerosol-generation substrate 100, the first area of the first surface 10 is not in contact with the aerosol-generation substrate 100, and the third area corresponding to the first area is also not in contact with the aerosol-generation substrate 100, so that the first heating element 2 arranged in the third area is separated from the aerosol-generation substrate 100, thereby avoiding the deterioration of the aerosol-generation substrate 100 caused by the long-term soaking of the first heating element 2 in the aerosol-generation substrate 100. In this case, an end of the vaporization core is inserted in the liquid storage cavity 5, and the aerosol-generation substrate 100 rises from an end of the first microgroove 12 for vaporization.

Referring to FIG. 16 , FIG. 16 is a schematic structural diagram of another embodiment of an electronic vaporization assembly according to the present invention. In the another embodiment, the plurality of first microgrooves 12 are parallel to each other and provided at intervals; the liquid storage cavity 5 includes a first liquid storage chamber 51 and a second liquid storage chamber 52 provided at intervals on two ends of the plurality of first microgrooves 12, and the aerosol-generation substrate 100 in the first liquid storage chamber 51 and the second liquid storage chamber 52 diffuses from the two ends to a middle part of the plurality of first microgrooves 12; and the first heating element 2 is arranged at a position on the second surface 20 corresponding to the middle part of the plurality of first microgrooves 12. In this embodiment, the electronic vaporization assembly includes two liquid storage chambers which are the first liquid storage chamber 51 and the second liquid storage chamber 52 provided on two ends of the first microgrooves 12 respectively, so that the aerosol-generation substrate 100 diffuses from the two ends to the middle to be heated and vaporized by the first heating element 2 in the middle part.

In still another embodiment, the plurality of first microgrooves 12 extend from the center to the periphery; the liquid storage cavity 5 is provided corresponding to the center, and the aerosol-generation substrate 100 in the liquid storage cavity 5 diffuses from the center to the periphery along the plurality of first microgrooves 12; and the first heating element 2 is arranged on the second surface 20 around the liquid storage cavity 5. In this embodiment, the setting of the liquid storage cavity 5 is opposite to that in the foregoing embodiment. The liquid storage cavity 5 is provided at the center of the plurality of first microgrooves 12, and diffuses from the center to the periphery during use, and the first heating element 2 is arranged around the liquid storage cavity 5.

This application further provides a manufacturing method of the electronic vaporization assembly, including the following steps:

preparing a first microgroove array 11 having a plurality of identical first microgrooves 12 on the first surface 10 of the first substrate 1, where the plurality of first microgrooves 12 are uniformly distributed on the first substrate 1;

attaching the first heating element 2 to the second surface 20 of the first substrate 1 closely; and

soaking part of the first microgroove array 11 in the aerosol-generation substrate 100.

In the manufacturing method, the first microgroove 12 is formed by photolithographic etching, laser etching, nano-imprinting, or plasma etching.

In the manufacturing method, the first heating element 2 is formed by magnetron sputtering, evaporation or ion plating, or by high-temperature sintering of electronic paste after screen printing or ink-jet printing.

The manufacturing method further includes:

fixing the first heating element 2 between the closely attached first substrate 1 and the second substrate 3.

Corresponding to the structure of Embodiment 2, the first heating element 2 heats the first substrate 1 and the second substrate 3 simultaneously.

The manufacturing method further includes:

attaching the first substrate 1 to the second substrate 3 closely; and

attaching the first heating element 2 and the second heating element 4 to the first substrate 1 and the second substrate 3 respectively.

Corresponding to the structure of Embodiment 4, the first heating element 2 and the second heating element 4 heat the first substrate 1 and the second substrate 3 simultaneously.

To resolve the technical problems, this application further provides an electronic vaporization device, as shown in FIG. 17 .

The electronic vaporization device includes a power supply assembly 6 and the foregoing electronic vaporization assembly.

Using the vaporization core, the electronic vaporization assembly, and the electronic vaporization device, the substrate is made of a dense material, the heating element and liquid to be vaporized are provided on two different side portions of the vaporization core respectively and are not in contact with each other completely. Therefore, the e-liquid may not be deteriorated due to long-time storage during use, heavy metal elements may not appear in the vaporization process, and the safety is higher.

The foregoing descriptions are implementations of the present invention, and the protection scope of the present invention is not limited thereto. All equivalent structure or process changes made according to the content of this specification and accompanying drawings in this application or by directly or indirectly applying the present invention in other related technical fields shall fall within protection scope of this application.

While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive. It will be understood that changes and modifications may be made by those of ordinary skill within the scope of the following claims. In particular, the present invention covers further embodiments with any combination of features from different embodiments described above and below. Additionally, statements made herein characterizing the invention refer to an embodiment of the invention and not necessarily all embodiments.

The terms used in the claims should be construed to have the broadest reasonable interpretation consistent with the foregoing description. For example, the use of the article “a” or “the” in introducing an element should not be interpreted as being exclusive of a plurality of elements. Likewise, the recitation of “or” should be interpreted as being inclusive, such that the recitation of “A or B” is not exclusive of “A and B,” unless it is clear from the context or the foregoing description that only one of A and B is intended. Further, the recitation of “at least one of A, B and C” should be interpreted as one or more of a group of elements consisting of A, B and C, and should not be interpreted as requiring at least one of each of the listed elements A, B and C, regardless of whether A, B and C are related as categories or otherwise. Moreover, the recitation of “A, B and/or C” or “at least one of A, B or C” should be interpreted as including any singular entity from the listed elements, e.g., A, any subset from the listed elements, e.g., A and B, or the entire list of elements A, B and C. 

What is claimed is:
 1. A vaporization core for heating and vaporizing an aerosol-generation substrate, comprising: a first substrate comprising a first surface and a second surface opposite the first surface, the first surface being provided with a first microgroove array, the first microgroove array comprising a plurality of first microgrooves, the plurality of first microgrooves being configured to guide a flowing of an aerosol-generation substrate, the first substrate comprising a dense material; and a first heating element arranged on the second surface and configured to heat the first substrate to vaporize the aerosol-generation substrate in the plurality of first microgrooves.
 2. The vaporization core of claim 1, wherein a width of each first microgroove of the plurality of first microgrooves is less than 0.3 mm, and a depth of each first microgroove is less than 0.3 mm.
 3. The vaporization core of claim 1, wherein a cross section of each first microgroove of the plurality of first microgrooves is V-shaped.
 4. The vaporization core of claim 1, wherein each first microgroove of the plurality of first microgrooves comprises a blind groove.
 5. The vaporization core of claim 1, wherein the first heating element is configured to generate a temperature field when heating the first substrate, and first microgrooves of the plurality of first microgrooves with different densities are provided corresponding to different temperature areas.
 6. The vaporization core of claim 1, further comprising: a second substrate comprising a third surface and a fourth surface opposite the third surface, the third surface being provided with a second microgroove array, the second microgroove array comprising a plurality of second microgrooves, wherein the first substrate and the second substrate are stacked, and the second surface is attached to the fourth surface such that the first heating element is arranged between the first substrate and the second substrate.
 7. The vaporization core of claim 1, further comprising: a second substrate comprising a third surface and a fourth surface opposite the third surface, the third surface being provided with a second microgroove array, the second microgroove array comprising a plurality of second microgrooves, wherein the first substrate and the second substrate are stacked, and the first surface is attached to the third surface such that the first heating element is arranged on a side of the first substrate away from the second substrate.
 8. The vaporization core of claim 7, further comprising: a second heating element attached to the fourth surface and configured to heat the second substrate, wherein the first heating element and the second heating element are configured to be controlled to operate by different driving mechanisms, and wherein the plurality of first microgrooves and the plurality of second microgrooves are not in communication with each other.
 9. The vaporization core of claim 7, wherein the plurality of first microgrooves are parallel to each other and provided at intervals, the plurality of second microgrooves are parallel to each other and provided at intervals, and the plurality of first microgrooves and the plurality of second microgrooves are in communication with each other in an intersecting manner.
 10. The vaporization core of claim 1, wherein the first surface comprises a first area and a second area adjacent to the first area, the plurality of first microgrooves extend from the first area to the second area, the second surface comprises a third area corresponding to the first area, and the first heating element is arranged and covered only on the third area.
 11. An electronic vaporization assembly, comprising: a liquid storage cavity; and the vaporization core of claim
 1. 12. The electronic vaporization assembly of claim 11, wherein the plurality of first microgrooves are parallel to each other and provided at intervals, wherein the liquid storage cavity comprises a first liquid storage chamber and a second liquid storage chamber provided at intervals on two ends of the plurality of first microgrooves, and the aerosol-generation substrate in the first liquid storage chamber and the second liquid storage chamber is configured to diffuse from two ends to a middle part of the plurality of first microgrooves, and wherein the first heating element is arranged at a position on the second surface corresponding to the middle part of the plurality of first microgrooves.
 13. The electronic vaporization assembly of claim 11, wherein the plurality of first microgrooves extend from a center to a periphery, wherein the liquid storage cavity is provided corresponding to the center, and the aerosol-generation substrate in the liquid storage cavity is configured to diffuse from the center to the periphery along the plurality of first microgrooves, and wherein the first heating element is arranged on the second surface around the liquid storage cavity.
 14. An electronic vaporization device, comprising: a power supply assembly; and the electronic vaporization assembly of claim
 1. 